activity
20192025
most citedPurcell-Enhanced Emission from Individual SiV Center in Nanodiamonds Coupled to a SiN-Based, Photonic Crystal Cavity

36 citations · 128 across the 13 of their papers we have counts for

collaborators

13 papers

quant-ph2025

Tunable cavity coupling of a single SnV center in nanodiamond across bad-emitter and bad-cavity regimes

Selene Sachero, Robert Berghaus, Elena Nieto Hernandez +5

Efficient coupling between quantum emitters and optical cavities is essential for scalable quantum photonic technologies. Group IV vacancy centers in diamond, particularly the nega…

physics.optics2025★ 7 cited

Fabrication of Customized, Low-Loss Optical Resonators by Combination of FIB-Milling and CO Laser Ablation

Patrick Maier, Simon Rupp, Niklas Lettner +2

Fabry-Perot cavities are essential tools for applications like precision metrology, optomechanics and quantum technologies. A major challenge is the creation of microscopic spheric…

cond-mat.mes-hall2024

Strongly Coupled Spins of Silicon-Vacancy Centers Inside a Nanodiamond with Sub-Megahertz Linewidth

Marco Klotz, Richard Waltrich, Niklas Lettner +2

The search for long-lived quantum memories, which can be efficiently interfaced with flying qubits is longstanding. One possible solution is to use the electron spin of a color cen…

quant-ph2023

Controlling all Degrees of Freedom of the Optical Coupling in Hybrid Quantum Photonics

Niklas Lettner, Lukas Antoniuk, Anna P. Ovvyan +5

Nanophotonic quantum devices can significantly boost light-matter interaction which is important for applications such as quantum networks. Reaching a high interaction strength bet…

quant-ph2023★ 15 cited

All-Optical Spin Initialization via a Cavity Broadened Optical Transition in On-Chip Hybrid Quantum Photonics

Lukas Antoniuk, Niklas Lettner, Anna P. Ovvyan +7

Hybrid quantum photonic systems connect classical photonics to the quantum world and promise to deliver efficient light-matter quantum interfaces while leveraging the advantages of…

physics.optics2023★ 18 cited

Enhanced Spectral Density of a Single Germanium Vacancy Center in a Nanodiamond by Cavity-Integration

Florian Feuchtmayr, Robert Berghaus, Selene Sachero +6

Color centers in diamond, among them the negatively-charged germanium vacancy (GeV), are promising candidates for many applications of quantum optics such as a quantum network.…

physics.optics2023★ 1 cited

Room Temperature Fiber-Coupled single-photon devices based on Colloidal Quantum Dots and SiV centers in Back Excited Nanoantennas

Boaz Lubotzky, Alexander Nazarov, Hamza Abudayyeh +7

We demonstrate an important step towards on chip integration of single photon sources operating at room temperature fiber coupling of a directional quantum emitter with back-excita…

quant-ph2022★ 6 cited

A Quantum Repeater Platform based on Single SiV Centers in Diamond with Cavity-Assisted, All-Optical Spin Access and Fast Coherent Driving

Gregor Bayer, Robert Berghaus, Selene Sachero +8

Quantum key distribution enables secure communication based on the principles of quantum mechanics. The distance in fiber-based quantum communication is limited to about a hundred…

quant-ph2022

Hybrid Quantum Nanophotonics: Interfacing Color Center in Nanodiamonds with Si3N4-Photonics

Alexander Kubanek, Anna P. Ovvyan, Lukas Antoniuk +2

This chapter covers recent developments in the field of hybrid quantum photonics based on color centers in nanodiamonds and Si3N4-photonics towards a technology platform with appli…

physics.optics2021

A Robust Coherent Single-Photon Interface for Moderate- NA Optics Based on SiV Center in Nanodiamonds and a Plasmonic Bullseye Antenna

Richard Waltrich, Hamza Abudayyeh, Boaz Lubotzky +7

Coherent exchange of single photons is at the heart of applied Quantum Optics. The negatively-charged silicon vacancy center in diamond is among most promising sources for coherent…

quant-ph2021★ 21 cited

Single photon randomness originating from the symmetry of dipole emission and the unpredictability of spontaneous emission

Michael Hoese, Michael K. Koch, Felix Breuning +3

Quantum random number generation is a key ingredient for quantum cryptography and fundamental quantum optics and could advance Monte-Carlo simulations and machine learning. An esta…

cond-mat.mtrl-sci2021★ 24 cited

Hybrid quantum photonics based on artificial atoms placed inside one hole of a photonic crystal cavity

Konstantin G. Fehler, Lukas Antoniuk, Niklas Lettner +7

Spin-based quantum photonics promise to realize distributed quantum computing and quantum networks. The performance depends on efficient entanglement distribution, where the effici…

cond-mat.mtrl-sci2019★ 36 cited

Purcell-Enhanced Emission from Individual SiV Center in Nanodiamonds Coupled to a SiN-Based, Photonic Crystal Cavity

Konstantin G. Fehler, Anna P. Ovvyan, Lukas Antoniuk +6

Hybrid quantum photonics combines classical photonics with quantum emitters in a postprocessing step. It facilitates to link ideal quantum light sources to optimized photonic platf…